Very, very easy to unintentionally do in the past, B2B. I used to block myself a couple of times a year, lol
The problem was, the "block" (ignore) tab was at the bottom on the post page and was too easy for our cursers to pass over and trigger.
Now ihub has made some changes and that pitfall might no longer be there.
But in the past I "blocked" people I never intended to block as my curser passed over the block (ignore) tab as I was reading their post.
No problem at all, B2B